css div position to parent

To position an element "fixed" relative to a parent element, you want

position:absolute

on the child element, and any position mode other than the default or static on your parent element.

For example:

#parentDiv { position:relative; }
#childDiv { position:absolute; left:50px; top:20px; }

This will position

childDiv

element 50 pixels left and 20 pixels down relative to parentDiv's position.

To position an element "fixed" relative to the window, you want

position:fixed

, and can use

top:

,

left:

,

right:

, and

bottom:

to position as you see fit.

For example:

#yourDiv { position:fixed; bottom:40px; right:40px; }

This will position

yourDiv

fixed relative to the web browser window, 40 pixels from the bottom edge and 40 pixels from the right edge.